diff --git a/README.md b/README.md
index 52231d0..5c1ddd8 100644
--- a/README.md
+++ b/README.md
@@ -309,6 +309,7 @@ You don't have to do anything manually!
 1. Gandi LiveDNS API
 1. Knot DNS API
 1. DigitalOcean API (native)
+1. ClouDNS.net API
 
 **More APIs coming soon...**
 
diff --git a/acme.sh b/acme.sh
index 7906aa4..671b0d3 100755
--- a/acme.sh
+++ b/acme.sh
@@ -3477,7 +3477,10 @@ issue() {
         if [ ! "$usingApache" ]; then
           if webroot_owner=$(_stat "$_currentRoot"); then
             _debug "Changing owner/group of .well-known to $webroot_owner"
-            chown -R "$webroot_owner" "$_currentRoot/.well-known"
+            if ! _exec "chown -R \"$webroot_owner\" \"$_currentRoot/.well-known\""; then
+              _debug "$(cat "$_EXEC_TEMP_ERR")"
+              _exec_err >/dev/null 2>&1
+            fi
           else
             _debug "not chaning owner/group of webroot"
           fi
diff --git a/dnsapi/README.md b/dnsapi/README.md
index fe243cb..d419d5e 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -407,6 +407,20 @@ Ok, let's issue a cert now:
 acme.sh --issue --dns dns_dgon -d example.com -d www.example.com
 ```
 
+## 21. Use ClouDNS.net API
+
+You need to set the HTTP API user ID and password credentials. See: https://www.cloudns.net/wiki/article/42/
+
+```
+export CLOUDNS_AUTH_ID=XXXXX
+export CLOUDNS_AUTH_PASSWORD="YYYYYYYYY"
+```
+
+Ok, let's issue a cert now:
+```
+acme.sh --issue --dns dns_cloudns -d example.com -d www.example.com
+```
+
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_aws.sh b/dnsapi/dns_aws.sh
index 84aa28d..d5d52de 100755
--- a/dnsapi/dns_aws.sh
+++ b/dnsapi/dns_aws.sh
@@ -143,7 +143,7 @@ aws_rest() {
   CanonicalHeaders="host:$aws_host\nx-amz-date:$RequestDate\n"
   SignedHeaders="host;x-amz-date"
   if [ -n "$AWS_SESSION_TOKEN" ]; then
-    export _H2="x-amz-security-token: $AWS_SESSION_TOKEN"
+    export _H3="x-amz-security-token: $AWS_SESSION_TOKEN"
     CanonicalHeaders="${CanonicalHeaders}x-amz-security-token:$AWS_SESSION_TOKEN\n"
     SignedHeaders="${SignedHeaders};x-amz-security-token"
   fi
@@ -204,8 +204,8 @@ aws_rest() {
   Authorization="$Algorithm Credential=$AWS_ACCESS_KEY_ID/$CredentialScope, SignedHeaders=$SignedHeaders, Signature=$signature"
   _debug2 Authorization "$Authorization"
 
-  _H3="Authorization: $Authorization"
-  _debug _H3 "$_H3"
+  _H2="Authorization: $Authorization"
+  _debug _H2 "$_H2"
 
   url="$AWS_URL/$ep"
 
diff --git a/dnsapi/dns_cloudns.sh b/dnsapi/dns_cloudns.sh
new file mode 100755
index 0000000..f48a805
--- /dev/null
+++ b/dnsapi/dns_cloudns.sh
@@ -0,0 +1,170 @@
+#!/usr/bin/env sh
+
+# Author: Boyan Peychev <boyan at cloudns dot net>
+# Repository: https://github.com/ClouDNS/acme.sh/
+
+#CLOUDNS_AUTH_ID=XXXXX
+#CLOUDNS_AUTH_PASSWORD="YYYYYYYYY"
+CLOUDNS_API="https://api.cloudns.net"
+
+########  Public functions #####################
+
+#Usage: dns_cloudns_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_cloudns_add() {
+  _info "Using cloudns"
+
+  if ! _dns_cloudns_init_check; then
+    return 1
+  fi
+
+  zone="$(_dns_cloudns_get_zone_name "$1")"
+  if [ -z "$zone" ]; then
+    _err "Missing DNS zone at ClouDNS. Please log into your control panel and create the required DNS zone for the initial setup."
+    return 1
+  fi
+
+  host="$(echo "$1" | sed "s/\.$zone\$//")"
+  record=$2
+  record_id=$(_dns_cloudns_get_record_id "$zone" "$host")
+
+  _debug zone "$zone"
+  _debug host "$host"
+  _debug record "$record"
+  _debug record_id "$record_id"
+
+  if [ -z "$record_id" ]; then
+    _info "Adding the TXT record for $1"
+    _dns_cloudns_http_api_call "dns/add-record.json" "domain-name=$zone&record-type=TXT&host=$host&record=$record&ttl=60"
+    if ! _contains "$response" "\"status\":\"Success\""; then
+      _err "Record cannot be added."
+      return 1
+    fi
+    _info "Added."
+  else
+    _info "Updating the TXT record for $1"
+    _dns_cloudns_http_api_call "dns/mod-record.json" "domain-name=$zone&record-id=$record_id&record-type=TXT&host=$host&record=$record&ttl=60"
+    if ! _contains "$response" "\"status\":\"Success\""; then
+      _err "The TXT record for $1 cannot be updated."
+      return 1
+    fi
+    _info "Updated."
+  fi
+
+  return 0
+}
+
+#Usage: dns_cloudns_rm   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_cloudns_rm() {
+  _info "Using cloudns"
+
+  if ! _dns_cloudns_init_check; then
+    return 1
+  fi
+
+  if [ -z "$zone" ]; then
+    zone="$(_dns_cloudns_get_zone_name "$1")"
+    if [ -z "$zone" ]; then
+      _err "Missing DNS zone at ClouDNS. Please log into your control panel and create the required DNS zone for the initial setup."
+      return 1
+    fi
+  fi
+
+  host="$(echo "$1" | sed "s/\.$zone\$//")"
+  record=$2
+  record_id=$(_dns_cloudns_get_record_id "$zone" "$host")
+
+  _debug zone "$zone"
+  _debug host "$host"
+  _debug record "$record"
+  _debug record_id "$record_id"
+
+  if [ ! -z "$record_id" ]; then
+    _info "Deleting the TXT record for $1"
+    _dns_cloudns_http_api_call "dns/delete-record.json" "domain-name=$zone&record-id=$record_id"
+    if ! _contains "$response" "\"status\":\"Success\""; then
+      _err "The TXT record for $1 cannot be deleted."
+      return 1
+    fi
+    _info "Deleted."
+  fi
+  return 0
+}
+
+####################  Private functions below ##################################
+_dns_cloudns_init_check() {
+  if [ ! -z "$CLOUDNS_INIT_CHECK_COMPLETED" ]; then
+    return 0
+  fi
+
+  if [ -z "$CLOUDNS_AUTH_ID" ]; then
+    _err "CLOUDNS_AUTH_ID is not configured"
+    return 1
+  fi
+
+  if [ -z "$CLOUDNS_AUTH_PASSWORD" ]; then
+    _err "CLOUDNS_AUTH_PASSWORD is not configured"
+    return 1
+  fi
+
+  _dns_cloudns_http_api_call "dns/login.json" ""
+
+  if ! _contains "$response" "\"status\":\"Success\""; then
+    _err "Invalid CLOUDNS_AUTH_ID or CLOUDNS_AUTH_PASSWORD. Please check your login credentials."
+    return 1
+  fi
+
+  CLOUDNS_INIT_CHECK_COMPLETED=1
+
+  return 0
+}
+
+_dns_cloudns_get_zone_name() {
+  i=2
+  while true; do
+    zoneForCheck=$(printf "%s" "$1" | cut -d . -f $i-100)
+
+    if [ -z "$zoneForCheck" ]; then
+      return 1
+    fi
+
+    _debug zoneForCheck "$zoneForCheck"
+
+    _dns_cloudns_http_api_call "dns/get-zone-info.json" "domain-name=$zoneForCheck"
+
+    if ! _contains "$response" "\"status\":\"Failed\""; then
+      echo "$zoneForCheck"
+      return 0
+    fi
+
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_dns_cloudns_get_record_id() {
+  _dns_cloudns_http_api_call "dns/records.json" "domain-name=$1&host=$2&type=TXT"
+  if _contains "$response" "\"id\":"; then
+    echo "$response" | cut -d '"' -f 2
+    return 0
+  fi
+  return 1
+}
+
+_dns_cloudns_http_api_call() {
+  method=$1
+
+  _debug CLOUDNS_AUTH_ID "$CLOUDNS_AUTH_ID"
+  _debug CLOUDNS_AUTH_PASSWORD "$CLOUDNS_AUTH_PASSWORD"
+
+  if [ -z "$2" ]; then
+    data="auth-id=$CLOUDNS_AUTH_ID&auth-password=$CLOUDNS_AUTH_PASSWORD"
+  else
+    data="auth-id=$CLOUDNS_AUTH_ID&auth-password=$CLOUDNS_AUTH_PASSWORD&$2"
+  fi
+
+  response="$(_get "$CLOUDNS_API/$method?$data")"
+
+  _debug2 response "$response"
+
+  return 0
+}